push unfinished work on docker

DOCKER.md

akka-bbb-apps/.dockerignore

akka-bbb-apps/Dockerfile

bbb-lti/.dockerignore

bbb-lti/Dockerfile

bbb-lti/entrypoint.sh

bbb-lti/grails-app/i18n/messages.properties

bbb-lti/grails-app/i18n/messages_es.properties

bbb-lti/grails-app/i18n/messages_fr.properties

bbb-lti/grails-app/i18n/messages_pt.properties

bbb-webhooks/config/custom-environment-variables.yml

bigbluebutton-html5/.dockerignore

bigbluebutton-html5/Dockerfile

bigbluebutton-html5/Dockerfile.dev

bigbluebutton-web/.dockerignore

bigbluebutton-web/Dockerfile

bigbluebutton-web/docker_wrapper.sh

bigbluebutton-web/entrypoint.sh

labs/docker/docker-compose.yml

labs/docker/greenlight/db/production/production.sqlite3